초록 ▼

Sprite-defined objects are completely defined throughout the video sequence as of their first appearance by a "sprite" and one or more trajectories. The sprite includes all the image characteristics of an object throughout the video sequence, and one or more trajectories warp or transform the sprite

Sprite-defined objects are completely defined throughout the video sequence as of their first appearance by a "sprite" and one or more trajectories. The sprite includes all the image characteristics of an object throughout the video sequence, and one or more trajectories warp or transform the sprite to represent the object in each frame of the video sequence. The sprite-defined object or objects are a subset of the general objects in the general video sequence and have available more information when they first appear in a video sequence than general objects. A simplified compression method allows the additional information available for sprite-defined objects to be utilized more efficiently than the additional information would be by encoder and decoder processes for general objects. As a result, processing the sprite-defined object or objects of the general video sequence in accordance with this simplified process can further improve bit rate requirements and efficiency for storing or transmitting the general video information.

대표청구항 ▼

[ We claim:] [1.] A method of encoding in a compressed format information within a video image frame sequence having first and second video frames that include general arbitrary image objects with arbitrary configurations, the image objects undergoing changes between, and having different attributes

[ We claim:] [1.] A method of encoding in a compressed format information within a video image frame sequence having first and second video frames that include general arbitrary image objects with arbitrary configurations, the image objects undergoing changes between, and having different attributes in, the first and second video image frames, at least one of the image objects being a sprite-defined image object defined initially by a sprite and a trajectory, wherein the sprite-defined object includes a single instance of pixel information used to construct the object in at least two frames of the video sequence, and where one or more trajectories are used to compute the position of the pixel information in the frames of the video sequence, the method comprising:distinguishing the sprite-defined image object from the general image objects;for the general image objects, determining estimated image objects in the second video image frame; identifying differences between the estimated image objects in the second video image frame and the image objects in the second video image frame to determine transform errors for the image objects; and encoding the transform error in a first compressed format; andfor the sprite-defined object, encoding the sprite and the trajectory.